Normal thermal conduction in lattice models with asymmetric harmonic interparticle interactions

doi:10.1088/1674-1056/22/7/070505

中国物理B ›› 2013, Vol. 22 ›› Issue (7): 70505-070505.doi: 10.1088/1674-1056/22/7/070505

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Normal thermal conduction in lattice models with asymmetric harmonic interparticle interactions

钟毅, 张勇, 王矫, 赵鸿

Department of Physics, Institute of Theoretical Physics and Astrophysics, Xiamen University, Xiamen 361005, China

收稿日期:2013-05-01 出版日期:2013-06-01 发布日期:2013-06-01
基金资助:
Project supported by the National Natural Science Foundation of China (Grants Nos. 10925525 and 10805036).

Normal thermal conduction in lattice models with asymmetric harmonic interparticle interactions

Zhong Yi (钟毅), Zhang Yong (张勇), Wang Jiao (王矫), Zhao Hong (赵鸿)

Department of Physics, Institute of Theoretical Physics and Astrophysics, Xiamen University, Xiamen 361005, China

Received:2013-05-01 Online:2013-06-01 Published:2013-06-01
Contact: Zhao Hong E-mail:zhaoh@xmu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grants Nos. 10925525 and 10805036).

摘要/Abstract

摘要： We study the thermal conduction behaviors of one-dimensional lattice models with asymmetric harmonic interparticle interactions. Normal thermal conductivity independent of the system size is observed when the lattice chains are long enough. Because only the harmonic interactions are involved, the result confirms without ambiguity that asymmetry plays a key role in resulting in normal thermal conduction in one-dimensional momentum conserving lattices. Both equilibrium and nonequilibrium simulations are performed to support the conclusion.

关键词: anharmonicity, normal thermal conduction, Green-Kubo formula

Abstract: We study the thermal conduction behaviors of one-dimensional lattice models with asymmetric harmonic interparticle interactions. Normal thermal conductivity independent of the system size is observed when the lattice chains are long enough. Because only the harmonic interactions are involved, the result confirms without ambiguity that asymmetry plays a key role in resulting in normal thermal conduction in one-dimensional momentum conserving lattices. Both equilibrium and nonequilibrium simulations are performed to support the conclusion.

Key words: anharmonicity, normal thermal conduction, Green-Kubo formula

中图分类号: (Classical transport)

05.60.Cd

44.10.+i (Heat conduction) 66.70.-f (Nonelectronic thermal conduction and heat-pulse propagation in solids;thermal waves) 63.20.-e (Phonons in crystal lattices)

钟毅, 张勇, 王矫, 赵鸿. Normal thermal conduction in lattice models with asymmetric harmonic interparticle interactions[J]. 中国物理B, 2013, 22(7): 70505-070505.

Zhong Yi (钟毅), Zhang Yong (张勇), Wang Jiao (王矫), Zhao Hong (赵鸿). Normal thermal conduction in lattice models with asymmetric harmonic interparticle interactions[J]. Chin. Phys. B, 2013, 22(7): 70505-070505.

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Normal thermal conduction in lattice models with asymmetric harmonic interparticle interactions

Normal thermal conduction in lattice models with asymmetric harmonic interparticle interactions

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